CN104249141B - Molded component and manufacturing method of molded component - Google Patents
Molded component and manufacturing method of molded component Download PDFInfo
- Publication number
- CN104249141B CN104249141B CN201410217695.9A CN201410217695A CN104249141B CN 104249141 B CN104249141 B CN 104249141B CN 201410217695 A CN201410217695 A CN 201410217695A CN 104249141 B CN104249141 B CN 104249141B
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- cast gate
- molten metal
- drip molding
- mould
- recess
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 30
- 239000002184 metal Substances 0.000 claims abstract description 30
- 238000000465 moulding Methods 0.000 claims description 36
- 238000000034 method Methods 0.000 claims description 26
- 238000003754 machining Methods 0.000 claims description 11
- 238000007493 shaping process Methods 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 238000002844 melting Methods 0.000 description 12
- 230000008018 melting Effects 0.000 description 12
- 238000005266 casting Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000004411 aluminium Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000011218 segmentation Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
Provided is a molded component and a manufacturing method of the molded component, aiming to reduce processing time after forming of a molded component as much as possible so as to reduce manufacturing cost. A metal melt (9) is filled into a cavity (8a) from a sprue (7b) on a parting line (PL) of a mold (6) to form a bracket (2); the periphery of the bracket (2) is provided with an avoidance recess (2e).
Description
Technical field
The present invention relates to the manufacture method of mo(u)lded piece and mo(u)lded piece.
Background technology
For example it is used for the bracket of stepper motor using the mo(u)lded piece being made up of aluminium injection moulding.As one, according to Fig. 4,
The situation casting bracket with cover half 52 matched moulds to the dynamic model 51 as mold is illustrated.Carve on dynamic model 51 and be provided with runner 51a
And cast gate 51b.In addition, being provided with die cavity 52a in cover half 52.Make die parting line pl consistent with the end face of drip molding.Additionally, in cast gate
Position not along (be formed at the end face of drip molding beyond when) in the case of die parting line pl formation, on the outer peripheral face of drip molding
Shaped wire can be formed, affect the appearance and size of product and need later process to be removed, so and non-ideal.Thus, as above institute
State, the method in the past being adopted is to be configured the die parting line pl of mold in the way of the end face forming bracket, after casting
Later process in the end face of drip molding is carried out cast gate removing residues during machining.
When making mo(u)lded piece shape with aluminium injection moulding, in the case of molten metal temperature is higher, near cast gate, by molten
Liquid collides more fierce mold branch and is etched because of melting loss, and the thickness of drip molding can increase the thickness of the recess because of melting loss generation
Spend and shape, it is then desired to carry out machining in later process.
Therefore, in order to melting loss not produced to mold it is thus proposed that forming the side with mar proof, the overlay film of resistance to melting loss
Case (with reference to patent document 1).
Similarly, also it has been proposed that the casting molds of another kind of scheme, will be provided with fang platform portion near cast gate with
The dynamic model of cooling-water duct is divided into the segmentation mould being formed with fang platform portion and the segmentation mould being formed with cooling-water duct, and only right
The big fang platform portion of wear intensity is changed (with reference to patent document 2).
Patent document 1 Japan Patent opens 6-66840 publication in fact
Patent document 2 Japanese Patent Laid-Open 8-174147 publication
During using mold shown in above-mentioned Fig. 4, the type positioned at cast gate 51b relative position that molten metal 53 crashes at first
Bottom of chamber portion 52b is easier to suffer erosion, and can form low-lying portion (recess) 52c.When low-lying portion (recess) 52c is formed on die cavity 52a,
Protuberance can be formed on drip molding.
Even if in addition, as shown in figure 5, employing the volume near cast gate 51b larger for the pressure ratio of molten metal 53
Increase the method to be reduced pressure, remain on presence and reduce liquation because die parting line pl can produce prominent unnecessary portion
The problem of utilization rate, and also there is cast gate counterpart 51c and be etched because of melting loss, the problem of protuberance is formed on drip molding.
If defining the protuberance of protuberance as above in the outer surface of drip molding, in the situation of the bracket for motor
Under, impact being produced on the precision of installed surface, so that being cut in the processing of rear road, thereby increasing processing cost.
In addition, as the formation segmentation mould being formed in die face described in patent document 1 described in overlay film or patent document 2
Situation, due to mold being carried out with special processing or being constructed using special, thus its manufacturing cost is high.
Content of the invention
It is an object of the invention to, provide a kind of machining period after reducing mo(u)lded piece shaping as possible come the system of cutting down
Cause this mo(u)lded piece and the manufacture method of mo(u)lded piece.
The present invention is carried out for solving above-mentioned technical problem, is characterized with having following composition.Present invention offer is a kind of will
Mo(u)lded piece that molten metal force feed shapes to mold is it is characterised in that in described molten metal from being formed at described mold
Die parting line on cast gate fill to die cavity the periphery edge of drip molding shaping and be provided with aspect ratio inner circumferential side flat part
Highly low avoidance recess.
According to above-mentioned composition, due to the periphery edge in drip molding, to be provided with the low avoidance of aspect ratio inner circumferential side flat part recessed
Portion, even if thus the cavity bottom of mold because melting loss occur depression and unwanted protuberance (protuberance) is formed on drip molding, from
And increased thickness corresponding with the height of this protuberance it is also possible to be absorbed using avoiding recess, therefore, there is no need in Hou Dao
Operation is removed it is not necessary to increase machining period such that it is able to reduce manufacturing cost, and can reduce needed for the maintenance of mould
Work.Additionally, the cast gate residue residuing in die joint side can remove in the lump when the end face forming part is processed, because
Without increase machining period.
The present invention is advisable with having following composition.That is, described avoidance recess is arranged at molten metal from described shaping
The end face of part flows on the position relative with this cast gate crashing into during described die cavity as the described cast gate of die parting line.
Thus, it is etched even if molten metal flows into, from cast gate, the cavity bottom crashing into during die cavity because of melting loss, thus
Protuberance (protuberance) is formed on drip molding, the avoidance recess being formed at the periphery edge of drip molding also can absorb and produces because of melting loss
Raw protuberance (protuberance).
If in addition, the described recess that avoids is arranged about the periphery edge of described drip molding, the no matter cast gate of mold
Position is located at where, and the protuberance (protuberance) of drip molding can be avoided recess infalliblely absorb.
If in addition, described mo(u)lded piece is the bracket of stepper motor, grand on the inner circumferential side flat part as installed surface
The protuberance rising is especially very for the impact of the installation accuracy of motor, so that removing it in later process, however, this
Invention can be absorbed using avoiding recess, thus only the end face of the die joint side of drip molding need to be processed, and will not increase
Machining period, nor the installation accuracy of motor can be reduced.
In addition, the present invention provides a kind of casting zero making mo(u)lded piece shape to the mold force feed molten metal of matched moulds
The manufacture method of part it is characterised in that the manufacture method of this mo(u)lded piece include matched moulds operation, avoid recess formation process and
Cast gate removing residues operation, wherein, in described matched moulds operation, makes the mould of a side and the mould of the opposing party carry out matched moulds,
The mould of one is formed with the runner and cast gate for molten metal described in force feed, and the mould of described the opposing party is formed with confession
The described molten metal flowing into and crossing die parting line from described cast gate is filled die cavity therein and be will be equivalent to flow in this die cavity
The position of cavity bottom that crashes into of described molten metal be formed as the lifting bottom shape that is lifted up from remaining cavity bottom；
In described avoidance recess formation process, make to flow into and cross the metal of die parting line from the runner of the mould of one and cast gate
Liquation fills the die cavity of the mould to described the opposing party, and forms aspect ratio inner circumferential side flat part in the periphery edge of drip molding
Highly low avoidance recess；In described cast gate removing residues operation, at the end along die parting line to the drip molding after shaping
While face carries out machining, in the lump by cast gate removing residues.
Thus, the molten metal flowing into and crossing die parting line from the runner of the mould of a side and cast gate is made to fill to the opposing party
Mould die cavity, and form the low avoidance recess of height of aspect ratio inner circumferential side flat part in the periphery edge of drip molding, because
And, even if cavity bottom occurs melting loss to form protuberance (protuberance) on drip molding and absorbed it is also possible to avoid recess, therefore,
Do not need to remove it in later process.In addition, by cutting in the end face along die parting line to the drip molding after shaping
Cut in the lump by cast gate removing residues while processing, in the case of not increasing man-hour, mo(u)lded piece can be cast.
Using above-mentioned mo(u)lded piece and its manufacture method, can be by the machining period after reducing mo(u)lded piece shaping as possible
And cut down manufacturing cost.
Brief description
Fig. 1 a～Fig. 1 c is front view, sectional view and the rearview of mo(u)lded piece.
Fig. 2 a～Fig. 2 c is the front view of mo(u)lded piece, sectional view and the rearview of another.
Fig. 3 is the half sectional view of mold.
Fig. 4 is the half sectional view of the comparative example representing mold.
Fig. 5 is the half sectional view of the comparative example representing mold.
Specific embodiment
Hereinafter, the embodiment of the manufacture method of the mo(u)lded piece to the present invention and mo(u)lded piece is said referring to the drawings
Bright.Hereinafter, as an example, the situation that the bracket being made stepper motor using aluminium die casting is shaped illustrates.
Fig. 1 a～Fig. 1 c is front view, sectional view and the rearview of bracket.Bracket 1 is a part of motor, and it makes to turn
Sub- axle can rotatably support to it, and in axial direction stator core carried out clamping, keep.
As shown in Figure 1a, the bracket main body 2 of rectangle central portion insertion be provided with for not shown armature spindle insertion
Axis hole 3.It is provided with around axis hole 3 and assemble bearing cage 4 therein for not shown bearing (ball bearing etc.).?
The outer circumferential side of bearing cage 4 is provided with the iron core mounting portion 5 that not shown stator core is assembled.In addition, in bracket
Four sides of main body 2 are provided with perpendicular wall 2a.Each corner of bracket main body 2 through chamfering, the vicinity of this chamfered section 2b be provided with for
Bracket main body 2 and not shown stator core are carried out the screwed hole 2c (reference picture 1c) of integrated assembling.
In addition, it is low to be provided with aspect ratio inner circumferential side flat part 2d (bracket installed surface face) in the periphery edge of bracket main body 2
Avoid recess 2e (reference picture 1b).This avoidance recess 2e is equivalent to molten metal (such as aluminium alloy) hereinafter described from mold
The cavity bottom that cast gate flows into die cavity and collides is subject to melting loss to corrode and easily form the position of protuberance (protuberance).
As shown in Figure 1a, avoid recess 2e only need to the periphery edge of bracket main body 2 arrange more than one just can, in this reality
Apply in example, arranged everywhere in amounting to of the relative periphery edge of bracket main body 2.
By using such composition, even if occurring the cavity bottom of mold to be hereinafter described subject to melting loss to form depression
The situation of unwanted protuberance (protuberance) is formed on drip molding, the height due to this protuberance is absorbed by avoiding recess 2e, thus, no
Need to remove it in later process, manufacturing cost can be reduced, and, the required work of the maintenance of mould can also be reduced
Make.Additionally, the cast gate residue residuing in die joint side can remove in the lump when carrying out end face processing, thus in addition do not increase
The number of working processes.
Fig. 2 a～Fig. 2 c is the front view of bracket, sectional view and the rearview of another.Composition and Fig. 1 a due to bracket 1
～Fig. 1 c is identical, thus same parts are adopted with same numbering, and quotes explanation.
Be with the difference of the bracket 1 of Fig. 1 a～Fig. 1 c, located at bracket main body 2 avoidance recess 2e around drip molding
Periphery edge and formed.Using such composition, no matter, located at where, the protuberance (protuberance) of drip molding is all for the gate location of mold
Recess 2e can be avoided to absorb infalliblely.
Herein, with reference to Fig. 3, one example of mold and the casting method of bracket are illustrated.Mold 6 possesses dynamic model 7
(side of mould) and cover half 8 (the opposing party of mould), by making bracket 1 become to the mold 6 force feed molten metal 9 after matched moulds
Shape.
The die joint of dynamic model 7 is carved and sets the runner 7a and cast gate 7b being formed with for force feed molten metal.Dynamic model 7 is not
Make contact separation action with respect to cover half 8 under the driving of the drive mechanism illustrating.
In addition, be formed with the die joint of cover half 8 filling out for the molten metal 9 entering and crossing die parting line pl from cast gate 7b
Fill in die cavity 8a therein.Molten metal 9 utilizes not shown shot sleeve pressurization and force feed is to die cavity 8a.
With the suitable position of outer circumferential side cavity bottom 8b collided by flowing into the molten metal 9 in die cavity 8a be formed as from
The lifting bottom shape that remaining inner circumferential side cavity bottom 8c is lifted up.
In the state of above-mentioned mold 6 completes matched moulds, molten metal 9 is made to flow into simultaneously from the runner 7a and cast gate 7b of dynamic model 7
Cross die parting line pl and be filled in the die cavity 8a of cover half 8.At this moment, the height of the periphery edge of drip molding is less than inner circumferential side flat board
The height of portion 2d, thus form avoidance recess 2e (reference picture 1b).
By the end face along die parting line pl to the drip molding after shaping carry out machining and by cast gate residue in the lump
Remove, thus completing the finishing of bracket 1 product.
So, molten metal 9 is made to flow into from the runner 7a and cast gate 7b of dynamic model 7 and cross die parting line pl and be filled in cover half
8 die cavity 8a, thus the height forming the periphery edge of drip molding is less than the avoidance recess 2e of the height of inner circumferential side flat part 2d
(reference picture 1b), thus, even if cavity bottom 8b is subject to melting loss to form low-lying portion (recess) 8d, and protuberance is formed on drip molding
(protuberance), it is also possible to be absorbed by avoiding recess 2e, therefore, there is no need to remove it in later process.
Further, since machining is carried out and cast gate is residual by the end face along die parting line pl to the drip molding after shaping
Thing is stayed to remove in the lump it is thus possible to manufacture mo(u)lded piece in the case of not increasing the number of working processes.
Above-mentioned embodiment is illustrated taking the bracket 1 as Motor Components as a example, however, the present invention is not limited to
This, equally can be applied to other mo(u)lded pieces and its casting method.
Claims (5)
1. a kind of mo(u)lded piece, by molten metal force feed is shaped to mold it is characterised in that
The drip molding shaping in the cast gate the die parting line being formed at described mold is filled to die cavity in described molten metal
Periphery edge, be provided with the low avoidance recess of the height of aspect ratio inner circumferential side flat part, this avoidance recess is in described mold
The protuberance of the drip molding that cast gate relative position is formed is absorbed.
2. mo(u)lded piece according to claim 1 it is characterised in that
The described recess that avoids is arranged at molten metal from the described cast gate inflow institute using the end face of described drip molding as die parting line
State the position relative with this cast gate crashing into during die cavity.
3. mo(u)lded piece according to claim 1 and 2 it is characterised in that
Described avoidance recess is formed around the periphery edge of described drip molding.
4. mo(u)lded piece according to claim 1 and 2 it is characterised in that
Described mo(u)lded piece is the bracket of stepper motor.
5. a kind of manufacture method of mo(u)lded piece, makes mo(u)lded piece shape, it is special to the mold force feed molten metal of matched moulds
Levy and be,
The manufacture method of this mo(u)lded piece includes matched moulds operation, avoids recess formation process and cast gate removing residues operation,
Wherein,
In described matched moulds operation, the mould of a side and the mould of the opposing party is made to carry out matched moulds, the mould of one is formed with
Runner for molten metal described in force feed and cast gate, the mould of described the opposing party is formed with for flowing into from described cast gate and crossing
The described molten metal of die parting line fills die cavity therein, and the mould of described the opposing party makes the type crashing into described molten metal
The suitable position in bottom of chamber portion is lifted up from remaining cavity bottom and forms lifting bottom shape；
In described avoidance recess formation process, make to flow into and cross die parting line from the runner of the mould of one and cast gate
Molten metal fills the die cavity of the mould to described the opposing party, thus form aspect ratio inner circumferential side in the periphery edge of drip molding putting down
The low avoidance recess of the height of plate portion；
In described cast gate removing residues operation, carry out machining in the end face along die parting line to the drip molding after shaping
While, in the lump by cast gate removing residues,
The described recess that avoids absorbs to the protuberance of the drip molding that the cast gate relative position in described mold is formed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013135039A JP5827644B2 (en) | 2013-06-27 | 2013-06-27 | Casting parts manufacturing method |
| JP2013-135039 | 2013-06-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104249141A CN104249141A (en) | 2014-12-31 |
| CN104249141B true CN104249141B (en) | 2017-01-18 |
Family
ID=52184593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410217695.9A Active CN104249141B (en) | 2013-06-27 | 2014-05-20 | Molded component and manufacturing method of molded component |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5827644B2 (en) |
| CN (1) | CN104249141B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04317857A (en) * | 1991-04-17 | 1992-11-09 | Toyoda Gosei Co Ltd | Manufacture of steering wheel core metal |
| JPH0666840U (en) * | 1993-02-27 | 1994-09-20 | 株式会社ユニシアジェックス | Gravity mold |
| JPH08174147A (en) * | 1994-12-28 | 1996-07-09 | Honda Motor Co Ltd | Casting die |
| CN201115870Y (en) * | 2007-08-23 | 2008-09-17 | 比亚迪股份有限公司 | Metal die casting die capable of relieving erosion |
| CN101664795A (en) * | 2009-10-30 | 2010-03-10 | 哈尔滨吉星机械工程有限公司 | Method for manufacturing vehicle camshaft cover by semi-solid rheoforming |
| JP2011062704A (en) * | 2009-09-15 | 2011-03-31 | Daikin Industries Ltd | Die |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2905420B2 (en) * | 1995-06-14 | 1999-06-14 | 花王株式会社 | Mold for cap injection molding |
| JPH0970644A (en) * | 1995-09-05 | 1997-03-18 | Toyota Motor Corp | Resin core |
-
2013
- 2013-06-27 JP JP2013135039A patent/JP5827644B2/en active Active
-
2014
- 2014-05-20 CN CN201410217695.9A patent/CN104249141B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04317857A (en) * | 1991-04-17 | 1992-11-09 | Toyoda Gosei Co Ltd | Manufacture of steering wheel core metal |
| JPH0666840U (en) * | 1993-02-27 | 1994-09-20 | 株式会社ユニシアジェックス | Gravity mold |
| JPH08174147A (en) * | 1994-12-28 | 1996-07-09 | Honda Motor Co Ltd | Casting die |
| CN201115870Y (en) * | 2007-08-23 | 2008-09-17 | 比亚迪股份有限公司 | Metal die casting die capable of relieving erosion |
| JP2011062704A (en) * | 2009-09-15 | 2011-03-31 | Daikin Industries Ltd | Die |
| CN102481629A (en) * | 2009-09-15 | 2012-05-30 | 大金工业株式会社 | Mold |
| CN101664795A (en) * | 2009-10-30 | 2010-03-10 | 哈尔滨吉星机械工程有限公司 | Method for manufacturing vehicle camshaft cover by semi-solid rheoforming |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015009246A (en) | 2015-01-19 |
| JP5827644B2 (en) | 2015-12-02 |
| CN104249141A (en) | 2014-12-31 |
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